Water Hardness in Wisconsin Well Water

In Wisconsin, water hardness levels average 159.93 mg/L CaCO3, with a maximum recorded level of 437.68 mg/L CaCO3. The EPA limit is 180 mg/L CaCO3. Currently 11.8% of tested wells exceed this limit, affecting approximately 92,040 wells.

Testing for water hardness in Wisconsin typically costs around $42. If treatment is needed, water treatment systems for water hardness cost approximately $4,595.

The risk level for water hardness in Wisconsin is rated as moderate. The state average of 159.93 mg/L CaCO3 is 15.7% above the national average of 138.229 mg/L CaCO3.